SF is easy to get to but takes a long time during morn and eve rush hours. About 20-25 mi to the airport.

You probably could, but it shouldn't keep you up. It's rather like a train in the distance. It might even lull you to sleep.

Not sure. I'd recommend you call the front desk.

Hi, Diana, To the best of my memory, all the rooms are non-smoking. I know that our room was non-smoking. When you choose your dates on the Half Moon Bay site, I believe you will see that the rooms available all specify non-smoking. Also, no pets allowed, which makes for a quieter stay. Although the motel is set back a bit from the highway, it does face the highway, so to avoid noises from the highway, be sure to request a room on the back side of the motel. Requesting a room on the second floor means you won't hear footsteps over your head. When we made our reservation, we spoke to the front desk by telephone, which enabled us to request the specifics mentioned above. If you make the reservation online, I don't know if there is space to make specific requests. Keep in mind that this is a modest motel, not a luxury inn. However, beds were comfortable, room and bath were clean, and in our room facing the back, we had total quiet. The breakfast is buffet style, self-service, simple offerings but more than adequate. Finally, when we were there, the staff was polite, most helpful and welcoming. Hope this helps. Bill